Vacuum birefringence and the polarized X-ray emission from a radio magnetar
This episode discusses a paper testing Vacuum Birefringence using combined X-ray and radio data from the magnetar 1E 1547.05408. Hosts analyze high polarization degrees detected in soft X-rays, which challenge standard non-refractive propagation models. The findings suggest that magnetospheric effects are crucial for probing superstrong-field quantum physics.